Improved die for making- clinch-rings



, Figure 3 is a top `view.

y @Mieli gmt g sMUEL-ivANsroNE, or PROVIDENCE, RHODE ISLAND.

Lette/rs Patent No. 100,823, dated March i5, 1870,

dl-*p IMPROVE!) DIE FOR MAKING CLINCH-RINGS.

`. The Schedule referred to in these Letters Patent and making of the ual-neY To all ywhom it mag/"concern Bef it known that I, SAMUEL VANs'roNE, of the city and county of Providence, in the State of Rhode Island, have invented an Improvement in the Art of Making Clinch-Rings; yand 1 do hereby declare that `the following spech'cation, taken in connection with the drawings making a part of the saine, isa full, clear,

` and exact description thereof.

Figure '1 is'a side elevation. Figure 2 is a section on line A B.

My invention relates to that article of .manufacture known as"clinchrings,? the oliice of which is too well v understood to require anexpianation here, and has for 4its object greater rapidity in manufacture, with less waste of material, than can be attained by any other method nowy in use. y

Clinch-rings have heretofore been cut from strips or sheets of metal, andv punchedwhile cold, after which they are heated, and stamped` into the proper shape 4by means 'ot' snit-able dies. My invention consists of a hed, E F, provided with a series of dies,\(as shown in igs; 2 and 3, sheet l.)

4 The dies may be made separately, andthe bed drilled to receive them, asc c c, (as shown fig. 2,) or the surface ofthe bed maybe so made asto form a compound die, as c c' c'. l f The strip of metal from which the rings are to be 'madeis heated and placed upon the die-bed, and forced into the dies. This maybe `accomplished in'iseveral ways.` For instance, the diefbed, after receiving the strip or sheet of heated metal, may be passed through rollers; or the die-bed may be attached to a sliding under-bed, which carries it under a fixed roller; or the bed may remain stationary, and be traversed by a roller.

The edges of the dies are sharp, and project slightly above tin surface of the bed, which causes the rings to berone detached, or nearly so, by the rolling process. p

Eaclrdie is' also provided with a raised center, as shown in lig. 2, which, as the nieta] is pressed in, makes a hole nearly through the bar.

` The'bar is now taken from the dies and the re mainder of the hole punched or drilled. through, and

the ring itself cut out at the same time, if the rolling process has failed to entirelydisconnect it.

I do not conne myself to the use of adie-bed with one row of dies, as two or more may be used to advantage, as shown in fig. 3, sheet 2.

Metal` washers may also be manufactured by the saine process and in the same manner.

What'I claim as my invention, and desire to secure l by Letters Patent, is

The series of connected dies. herein described, for

forming clinch-rings by rolling or pressing upon it.

strips or sheets of heated metal, substantially inthe manner described. V

` SAMUEL VANSTONE.

\ Witnesses:

W. B. VINCENT, t J orrN D. W. TAYLOR. 

